Multimedia Data is an integral component of our daily communication. Smartphones and other low-cost consumer devices allow to view, capture, and share images, video and audio in real time and with minimum effort. Captured multimedia content is used for communication, entertainment, or record-keeping.
From a security perspective, these wide-spread use cases raise questions of authenticity and origin of controversial content. The Multimedia Security Group aims to provide algorithmic tools to these common questions on multimedia content:

has an image or video been edited, and if so, how, where, and to what extend?

is it possible to link an image or video to a particular user?

what information can be forensically retrieved from degraded multimedia data
or physical documents?

how can multimedia content be actively armored to support post-hoc analysis
of manipulations or attribution?